Phosphonic acid

Details:

Product name: Phosphorous acid 98.5%min
Other name:  Phosphonic acid 98.5%min
Molecular formula: H3PO3
Molecular weight: 82.00
Appearance: Pure white crystal
CAS No.: 13598-36-2
EINECS No.: 237-066-7
Grade Standard: Agriculture Grade, Industrial Grade
Property:
Phosphorous acid is a clear to yellowish crystalline solid with a garlic like odour melting at 73 C, decomposes at 200 C. It is very soluble in water and in alcohol.
Uses:
Phosphorous acid is used in synthesis of phosphite salts, plastic stabilizers, pesticides, water-treatment chemicals, phosphite fertilizers for fruits like citrus and orange, vegetables, economic crops etc., cosmetics additives.
Phosphorous acid and phosphite are used as reducing agents in chemical industry because of easy oxidation property to phosphoric acid. They are used as antioxidant, stabilizer and chelating agent in plastic system. They are used as solvent in paint and as flame retardant on fibres. They are used as a chemical intermediate in the production of pharmaceutical ingredients, pesticides, optical brighteners and in lubricant additives and adhesives.
Packing:
1) 25kgs/PP woven bag with double PE inner bags, 20-25mt/20' FCL
2) 500, 1000kgs/jumbo bag, 20mt/20' FCL
3) iron drum or plastic drum
4) for 70% solution, packing is 25kg/plastic pail, 250kg/plastic drum or 1300kg/ibc
Storage and transportation:
stores in cool and ventilative storehouse, Prevents the rain drenches. When transporting should lightly unload with light packs, be sure not to roll and to invert. When transport by the sea and the inland water transport cannot lay aside in the deck.
Class:        8
UN No.:      2834
HS CODE:    281119 9090
Security: the product is a corrosion product, when catch fire should use the dry sand and CO2 fire extinguisher to put out the fire.
Production technology: Our Phosphorous acid is all prepared by hydrolysis of phosphorus trichloride with alcohols or phenols.
Caution: There is second grade phosphorous acid is made from the raffinate waste of dimethyl phosphite. It is odorless and not pure white crystal.